Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High molecular particle composite sound absorbing material, its mfg. method and uses

A technology of polymer particles and polymer materials, which is applied in the field of polymer particle composite sound-absorbing materials and their preparation, to achieve high absorption strength, broaden the sound-absorbing frequency band, and improve the mid-low frequency sound absorption coefficient

Inactive Publication Date: 2006-09-20
SICHUAN UNIV
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This innovative concept and preparation method of sound-absorbing materials have not been reported at home and abroad.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High molecular particle composite sound absorbing material, its mfg. method and uses
  • High molecular particle composite sound absorbing material, its mfg. method and uses
  • High molecular particle composite sound absorbing material, its mfg. method and uses

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The average particle size is 1000 μm, and the particle layer thickness is 30mm polypropylene particle layer 3; the apparent density is 85kg / m 3 , a polyurethane (PU) foam porous layer 2 with a thickness of 5mm; the perforated aperture is 3.5mm, the porosity is 1.8%, and the polyvinyl chloride (PVC) perforated layer 1 with a thickness of 3mm; the gradient is put into the plastic mold box 4 successively The periphery of the mold box and the surface layer of the polymer material are bonded together with an adhesive.

Embodiment 2

[0032] The average particle size is 150 μm, and the particle layer thickness is 20mm waste rubber powder particle layer 3; the apparent density is 15kg / m 3 , a polyethylene (PE) foam porous layer 2 with a thickness of 10mm; the perforated aperture is 5mm, the porosity is 1.75%, and the polyvinyl chloride (PVC) perforated layer 1 with a thickness of 1mm; the gradient is put into the plastic mold box 4 successively The periphery of the mold box and the surface layer of the polymer material are bonded together with an adhesive.

Embodiment 3

[0034] The polysiloxane particle layer 3 with an average particle size of 250 μm and a particle layer thickness of 10 mm; an apparent density of 67.5 kg / m 3 , a polyurethane (PU) foam porous layer 2 with a thickness of 15mm; the perforated aperture is 10.5mm, the porosity is 10.65%, and the thickness is a polypropylene (PP) perforated layer 1 with a thickness of 12mm; the gradient is put into the plastic mold box 4 successively, The periphery of the mold box and the periphery of the surface layer of the polymer material are bonded into a whole with an adhesive.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
The average particle sizeaaaaaaaaaa
Thicknessaaaaaaaaaa
Apparent densityaaaaaaaaaa
Login to View More

Abstract

The invention is a high molecular sound absorbing composite and the preparing method and use thereof, characterized by comprising high molecular grain layer, high molecular porous layer and high molecular pierced layer, arranging the three layers of high molecular materials in a fixed die box in a mode of gradient variation of acoustic impedance and bonding the die box with surface layers of the high molecular material together. In a range of 300-2000Hz, it has average sound absorbing coefficient greater than 0.4, strong sound absorbing ability with the maximum sound absorbing coefficient up to 1.0, and wide sound absorbing frequency range, and its noise reducing coefficient is up to 0.68 and simultaneously it is thinner.

Description

technical field [0001] The invention relates to a polymer particle composite sound-absorbing material, a preparation method and application thereof, and belongs to the field of functional polymer materials. Background technique [0002] With the development of science and technology and modern industry, noise pollution has become a worldwide problem. At the same time, with the enhancement of environmental awareness, people's requirements for the sound environment are getting higher and higher. As an engineering technology, the development of sound absorption and noise reduction depends on the development and application of new sound-absorbing materials. The current sound-absorbing materials mainly include inorganic, metal, organic porous materials and resonant sound-absorbing materials. Inorganic mineral porous materials such as glass wool have good sound absorption performance, but there are problems such as environmental pollution and health hazards; metal foam and fiber...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G10K11/168
Inventor 黄光速周洪李波王强郑静
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com